*HEADING
: SIMPLE CONTACT TEST; SMALL SLIDING [CAX4,RAX2]
********************
** Features Tested:
** *CONTACT INTERFERENCE, *FRICTION, *CHANGE FRICTION
********************
*PREPRINT,CONTACT=YES
********************
*RESTART,WRITE,FREQ=999
*NODE,NSET=RNODES
1,0.,1.
4,3.,1.
999,1.5,0.
*NGEN,NSET=RNODES
1,4,1
*ELEMENT,TYPE=RAX2,ELSET=RBODY
1,1,2
*ELGEN,ELSET=RBODY
1,3,1,1
*RIGID BODY,ELSET=RBODY,REFNODE=999
********************
*NODE,NSET=DNODES
5,0.5,0.9
7,1.5,0.9
11,0.5,2.
13,1.5,2.
*ELEMENT,TYPE=CAX4,ELSET=DBODY
4,5,7,13,11
*SOLID SECTION,ELSET=DBODY,MATERIAL=DMAT
1.,
*MATERIAL,NAME=DMAT
*ELASTIC
1.E6,0.
********************
*NSET,NSET=DTOP
11,13
*NSET,NSET=DBOT
5,7
********************
*surface,NAME=RSURF
RBODY,SPOS
*surface,NAME=DSURF
DBODY,S1
*CONTACT PAIR,INTERACTION=RDINT,SMALL SLIDING, TYPE=SURFACE TO SURFACE
DSURF,RSURF
*SURFACE INTERACTION,NAME=RDINT
1.,
*FRICTION
0.,
********************
*BOUNDARY
999,1,2
999,6,6
DTOP,1,2
********************
********************
**
** STEP 1: SHRINK FIT TO ESTABLISH CONTACT STATE
**
*STEP,NLGEOM
*STATIC
0.1,1.,0.05,1.
*CONTACT INTERFERENCE,SHRINK
DSURF,RSURF
*PRINT,CONTACT=YES
*EL PRINT,ELSET=DBODY,FREQ=999
S,
*EL FILE,ELSET=DBODY,FREQ=999
S,
*OUTPUT,FIELD,FREQ=999
*ELEMENT OUTPUT,ELSET=DBODY
S,
*NODE PRINT,FREQ=999
U,
*NODE FILE,FREQ=999
U,
*OUTPUT,FIELD,FREQ=999
*NODE OUTPUT
U,
*CONTACT FILE,MASTER=RSURF,FREQ=999
carea,
CFN,CFS
CMN,CMS
CFT,CMT
XN,XS,XT
cstress,cdisp
*OUTPUT,FIELD,FREQ=999
*CONTACT OUTPUT,VARIABLE=PRESELECT,MASTER=RSURF
cstress,cdisp
*CONTACT PRINT,MASTER=RSURF,FREQ=999
carea,
CFN,CFS
CMN,CMS
CFT,CMT
XN,XS,XT
cstress,cdisp
*END STEP
********************
**
** STEP 2: SLIDE WITHOUT FRICTION
**
*STEP,NLGEOM
*STATIC
0.1,1.,0.05,1.
*BOUNDARY
DTOP,1,1,0.1
*END STEP
********************
**
** STEP 3: ADD FRICTION
**
*STEP,NLGEOM,UNSYMM=NO
*STATIC
1.,1.
*CHANGE FRICTION,INTERACTION=RDINT
*FRICTION
0.3,
*END STEP
********************
**
** STEP 4: SLIDE WITH FRICTION
**
*STEP,NLGEOM,UNSYMM=NO
*STATIC
0.1,1.,0.05,1.
*BOUNDARY
DTOP,1,1,0.
*END STEP
********************